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Titration method and calculations guide

Chemical changes • Reactions of acids

Key concepts

What you'll likely be quizzed about

  • Titration determines the concentration or amount of a substance by reacting it with a solution of known concentration until the reaction reaches the equivalence point.
  • The equivalence point indicates stoichiometric neutralisation of acid and base, with the endpoint being denoted by a color change from an indicator.
  • Measuring the volume at this point allows for the calculation of moles and the subsequent determination of concentration or mass of the analyte.

Flashcards

Test your knowledge with interactive flashcards

Where should the eye be positioned when reading the burette?

Click to reveal answer

The eye should be level with the meniscus to avoid parallax error when recording the burette reading.

Key notes

Important points to keep in mind

Rinse burette with titrant and pipette with analyte to avoid dilution or contamination

Read the bottom of the meniscus at eye level to avoid parallax error

Perform a rough titration first, then at least three accurate repeats to obtain concordant titres

Average only the concordant titres for final calculations

Convert cm3 to dm3 by dividing by 1000 before using concentration formulae

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